Reinforced coated cord or thread.



E. D. G'. BAYNE & L. A. SUBERS.

REINFORCED 00mm) 00111) OR THREAD.

v APPLIOATION IILBD JAN. 21, 1908.

91 8,4 1 4, Patented Apr. 13, 1909.

Wbznesses fiZVenZohf W QC, 7

UNITED STATES PATENT OFFICE.

EUGENE D. C. BAYNE AND LAWRENCE A. SUBERSfOF CLEVELAND, OHIO.

REINFORCED COATED CORD OR THItEAD.

To all whom 'it may concern:

Be it known that we, EUGENE D. C. BAYNE and LAWRENCE A. Sonnns, citizens of the United States, and residents of Cleveland, county of Cuyahoga, State ofOhio, have invented certain new and useful Improvements in Reinforced Coated Cord or Thread the Component Strands of which are Coated, of which we hereby declare the following to be a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same." c

The objects of the invention are to provide a cord or thread similar to the cord orthread described in our previous a plicationfor Letters Patent of the United tates bearing Serial Number 380,401. This cord or thread was characterized by an exterior coating or envelop of non-fibrous, tenacious and preferably vulcanizable material, and the cord or thread was composed of individual strands twisted .together, each strand being separatel coated with or enveloped in a similar nonbrous substance before twisting, whereby the strands in each. cord or thread were maintained'substantially out of contact with each other, and hence incapable of frictional when afterward incorporated any his invention 1s 55. I .i-strands and itscoating adheres strongly to action u on each other, and also a series or group 0 such completed cords or threads, inv a fabric, were separated by their exterior envelops, and would be incapable of frictional contact with each other.

. A fabric formed from strong fibrous material, such as flax, will possess great tensile strength, and on account of the enveloping coatin s which prevent actual frictional contact o the fibers with each other will possess a degree of flexibility impossible to obtain in ordinary fabric.

cord or thread possessed of greater strength than the cord or thread shown and described in the said application, Serial Number 380,401, and also having a greater degree of durability and efficiency for manyuses than the cord or thread of said application, without materially lessening the degree of flexibility thereof or increasing its weight. To accomplish these objects the previously coated fibrous strands are wrapped or twisted about a previousl coated central reinforcin strand, and w ich remains perfectly straig t and is not twisted inv with the other Specification of Letters Patent. Application filed January 21, 1908. SerialNo. 411,960.

designed to provide a Patented April 1-3, 1909.

the coatings of the outer strands wrapped or twisted thereon.

. The invention comprises therefore the central rectilinear coated strand and the exterior fibrous coated strands wra ped or twisted thereupon as hereinafter escribed and shown in the accompanying drawings and specifically pointed out in the claims.

In the accompanyin drawings, Figure l is a view ofa complete cord or thread, and Fi 2 is a transverse section thereof.

n'these drawings 1 represents the central reinforcing strand, 2, 2 the fibrous strands, 3, 3, the strand coatings, and 4 the external coating.

It is important that the reinforcing strand or strands should be centrally located relative to the outer strands, so that it or they can not protrude or cut through the several envelops, and that the reinforcing strand shall be secured in place. Hence the fibrous strands must be wrapped or twisted closely about the reinforcing coated strand, so that it is tightly inclosed thereby, thus permitting of flexible movement of the reinforcing strand in unison with the fibrous strands without injury to the envelops of the several strands or to the outer envelop of the thread, otherwise the reinforcing strand which is soon cut its way through the non-fibrous material composing the several envelops.

The reinforcing strand can be formed preferably of metal, such as steel, which can e annealed or tempered to any desired degree of hardness and flexibility, and made to sustain any desired degree of pressure or tension, compatible with its diameter. It is preferable that the minimum tensile strength preferably metal such as fine steel wire would fabric can be built up makes it durable and impenetrable to ordinary blows.

It is understood that in a fabric formed of such cords or threads, the cords or threads are laid in each layer in parallel rows, their coatings adhering together, and the adjoining layers cross each other at an angle, thus obtaining tensile strength in at least two directions, similar to that shown and described in our application for Letters Patent bearing Serial Number 370,139. To obtain perployed in the central strand.

The central reinforcing strand can be a central strand of any material similarly coated with a flexible and preferably vulcanizable material and adapted to increase the tensile strength of each cord or thread and being perfectly straight will lessen the tendency of the finished cord or thread to stretch and assist in giving cohesion and sha e thereto.

e strength of the finished cord or thread is greatly enhanced by the friction of the outer strands upon the central reinforcing strand which 0p oses a strong resistance to any movement wdi atever of the outer strands thereon, such as would be caused by longitudinal strain, which would tend to elongate the spirally twisted or wrapped strands.

It is found that in this manner a practically non-extensible cord or thread is formed,

that is, that can notstretch, since the addition of a relatively straight inner strand greatly increases the tensile strength of the cord or thread and its value is commensurably greatly enhanced. As anillustration, a cord or thread of com aratively non-elastic fiber such as flax and of about one thirty second of an inch in diameter would have a breaking or elastic limit of about twentyfive pounds. Then supposing a cord or thread to be composed of a specially prepared steel wire of a proximately a sixty-fourth of an inch in iameter and four fibrous strands are wrapped or twisted thereon having a suflicient diameter to bring the cord or thread up to a'thirty second of an inch in diameter and the metallic strand to have a breaking or elastic limit of twenty pounds and the fibrous strands to have a breakin limit of about eight pounds each, or a tota of thirty two pounds, it will be seen that the collective strain sustainable by the finished cord or thread of one-thirty second of an inch in diameter, would be in'the neighborhood of-fifty pounds.

The aggregate breakin strain of all the fibrous strands with whic the central metallic strand is wrap ed should referably be greater than that of themeta ic strand, so as to enable all the strands to break in unison, since the fibrous strands are not twisted together but are Wrapped or twisted about the metallic strand, hence they are not collectively, as strong as if they were twisted together. However, if a fibrous central strand is emplo ed the conditions are reversed. Since 316 breaking strain of the central strand will be equal to or exceed that of the several strands that envelop it.

The diameter of the reinforced cord or thread may be increased by increasing the diameters of the central and exterior strands and a stronger cord -or thread obtained thereby.

When a fibrous central strand is employed,-

coating substantially isolate the several strands and cords and threads so that they are not in actual contact with each other.

Having described the invention what we claim as new and desire to secure by Letters Patent is 1. A 'threadcom rising fibrous strands and a metallic strand grou ed together, the meta lic strand being coated with an envelop of non-fibrous flexlble material, and ,the fibrous strands being each saturated with and coated with an envelop of non-fibrous flexible material and the completed thread also coated with a non-fibrous and flexible material, the said coatings upon said strands and threads being adhesive and vulcanizable.

2. A thread for an unwoven fabric comrising fibrous strands and a metallic strand lnclosed between the fibrous strands, said strands each coated with an envelo of nonfibrous and vulcanizable material, aving a sticky surface prior to twisting and the completed thread provided with an exterior coating of similar material.

3. A thread for an unwoven fabric, comprising a series of fibrous and a metallic strand united to ether, a separate coating upon each stran of non-fibrous and tenacious material and a similar coating upon the completed thread. I

- 4. A thread for an unwoven fabric, comprising a plural number of fibrous strands and a-metallic-strand, centrally inclosed between the fibrous strands, each strand having a coating thereon of non-fibrous and adhesive material, the said strands adhering together to form the thread, and the completed thread having a coating of cylindrical and nonfibrous and adhesive material compressed thereon. 4

5. A- thread com rising fibrous strands and a metallic stran rouped together, the said strands being eacfi coated with a nonfibrous, flexible material, and the said completed thread also coated with a non-fibrous and flexible material, the said coatings upon said strands or threads being adhesive and vulcanizable and the said metallic strand and and a central reinforcing strand, the said and inclosing the said reinforcing strand,

.each of said strands being coated with a nonrectilinear untwisted'reinforcing strand, and

its coating bein inclosed by the Said fibrous a plurality of fibrous strands wrapped or 5 strands and their coatings. twisted closely about said central strand, 6. A thread comprising fibrous strands, each strand havingacoatingthereon of nonfibrous and adhesive material, and the finished cord or thread coated with a nonfibrous and adhesive material.

In testimony whereof we hereunto set our hands this 14th day of January, 1908, at

fibrous strands being Wound or twisted about fibrous material, and the said corn leted thread being also coated with a nonbrous Cleveland, Ohio. and flexible material, the said coatings uponl EUGENE D. C. BAYNE. said strands and thread being adhesive and LAWRENCE A. SUBERS. vulcanizable. In presence of- 7. A cord or thread, comprising a central J. E. TAYLOR,

A. T. OsBoRN. 

